Mechanical refrigerating apparatus



Get. 24, 1933. r 5 T ER 1,932,172

MECHANICAL REFTRIGERATING APPARATUS Filed Dec.-23, 1929 I N V EN TOR. Harry S Es f/er A TTORNE Y.

Patented Oct. 24, 1933 1,932,172 MECHANICAL REFRIGERATING APPARATUS This invention relates to ing apparatus generally Harry S. Estler, Detroit, Mich.,

cago Pneumatic Tool Company,

assignor to Chi- New York,

N. Y., a corporation of New Jersey Application December 23, 1929 Serial No. 415,914

11 Claims. (Cl. 62-416) improved refrigeratbut with particular reference to refrigerating outfits of the small capacity type such as those intended for use in the home.

One of vide improved means for draft. Another object is to incorporate natural the same to the objects of the invention is to prothe removal of heat by into an apparatus unit for installation in the machine compartment of a household refrigerator.

Other objects will be apparent from the detailed description which follows.

A very frigerators are installed in atmosphe large proportion of household type rekitchens where the re is often at a high temperature on account of cooking, ironing and similar operations.

The known types of machines having natural draft condensers utilize the air at the middle or upper portions of the kitchen for cooling the condenser, thus imposing an extra load on the mechanism and involving extra expense for operation.

Instead of locating the condenser on top of the refrigerator on the back or side where it is surrounded by heated air, the present invention involves the combination with the compressor of a suitable condenser placed below it and close to the floor so. coolest air available in the the refrig as to be surrounded by the location occupied by erator. The invention further involves protecting the condenser from heat radiated from the compressor and/or if desired,

the motor but providing, for upward movement of air from the condenser to carry away the heat of these parts.

The quantity of air permitted to flow over the. machine parts of the apparatus, whether or not it first comes in contact with the condenser, may be proportioned in any suitable manner, as by the use of bafiies.

In order to illustrate the invention concrete embodiments thereof are shown in the accompanying drawing in which:

Fig. 1 is a vertical sectional view through a household refrigerator cabinet, and

Fig. 2 is a similar view showing a modified ar- In the rangement.

form shown in Fig.

cabinet has a food storage compartment A containing an evaporator 3 of any suitable or desired type for extracting heat therefrom,

the food and beneath compartment an apparatus compartment B containing the refrigerating mechanism. This compartment B has mounted therein as a unit the remaining portions of the refrigerating apparatus comprising pump 4, motor 5 for drive ing the pump and a condenser 6 arranged to be 1 the refrigerator cooled by the natural draft of .air thereover.

Compressor 4 has a suction line 'I connected to the top of evaporator 3 and a discharge line 8 connected to condenser 6, the other end of the condenser being connected by a an expansion valve 10 of any suitable or thus completing the refrig- Compressor 4 and electric motype to evaporator 3 erating circuit.

conduit 9 through desired tor 5 may be mounted together in a single casing to form a sealed motor-pump unit. To provide for free movement of air for cooling purposes,

compartment B has one or to the floor and one or more more inlets 11 close outlets 12 at the top.

Referring now to the apparatus unit and to the arrangement of the condenser 6 relative thereto, it is to be noted that the condenser has a horizontally disposed part 6a interposed between compressor 4 the floor, also an angularly or motor-pump unit 5, 4 and disposed portion 6b remote from the pump and in the present instance extending substantially vertically at the back of compartment protecting the 6 from the radiant heat of 5; such means may B. Means are provided for horizontal portion 6a of condenser pump 4 and motor be arranged to permit the passage of air from condenser portion 6a to carry away the heat thereof.

By preference the means take the form of a perforated plate 13, the upper portion having a bright reflecting surface. e

perforations may of plate striking up portions efiected by punching and 13 as indicated. By

the provision of a bafiie 14 between pump 4 and the angular part 6b of condenser 6, only a portion of the cooling air 6 is permitted to come into pump unit compressor 4. and condenser In the modified form of the passing over condenser contact with motor- 5, 4 and all heat exchange between part 61) is prevented. invention o m in Fig. 2, both the inlet 11' and the outlet 12' for the cooling air in apparatus compartment are at the front of the cabinet. The appara tus unit has its compressor Fig. 1 and condenser disposed beneath the to the position shown in 6 is wholly horizontally compressor with an apertured 4' at right angles reflector member 13' interposed to protect the condenser from radiated heat from. pump 4. but to permit passing of radiated heat from the condenser. In this instance member 13' does not extend across cabinet but only somewhat beyond leaving a large open space compressor 4' toward the back of the compartment for the upward movement of the cooling air. This space starrtially equal parts by a is divided into subdownwardly extend ing baflie member 14' which has a portion curving over the top of the compressor 4' and dividing outlet 12' into two substantially equal parts. Thus the ascending currents of air which carry away heat from condenser 6' are divided and one portion is kept wholly out of heat-exchange relation with pump 4 by the baffle member 14'. In other respects the elements making up the refrigerating outfit disclosed in Fig. 2 are the same as those in Fig. 1 and have a similar arrangement of connections.

From the above it will be apparent that the arrangement of parts in the present invention is such as to dispose the condenser in the coolest air available. It further prevents the radiation of heat from'the compressor or motor-pump unit to the condenser and involve the use of as much or as little of the cooling air for the condenser as is desired to carry away the heat of the compressor or motor-pump unit. Any desired portion of the condenser may be arranged to be wholly out of heat exchange relation with the other parts of the apparatus. With either of the arrangements indicated, the capacity of a given refrigerating apparatus is increased and its operatingcost diminished.

While the invention has been herein disclosed in what are now considered to be preferred forms. it is to be understood that the invention is not limited to the specific details thereof but covers all changes, modifications and adaptations within the scope of the appended claims.

I claim as my invention:

1. In a household refrigerator having a food storage compartment and an apparatus compartment therebeneath having an air inlet at the bottom and'a vent adjacent the top thereof, refrigerating apparatus in said apparatus compartment comprising a compressor adjacent the bottom of the compartment and a condenser having angular portions, one of which extends horizontally beneath said compressor.

2. In a household refrigerator having a food storage compartment and an apparatus compartment therebeneath having an air inlet at the bottom and a vent adjacent the top thereof, refrigerating apparatus in said apparatus compartment comprising a compressor adjacent the bottom of the compartment, 2. horizontally extending condenser between said compressor and a fioor supporting the refrigerator, and means interposed between said compressor and said condenser restricting the passage of radiant heat but permitting the passage of convective heat.

3. In a household refrigerator having a food storage compartment and an apparatus compartment therebeneath having an air inlet at the bottom and a vent adjacent the top thereof, refrigerating apparatus in said apparatus compartment comprising a compressor adjacent the bottom of the compartment, a horizontally extending condenser between said compressor and a floor supporting therefrigerator, and means maintaining a part of the cooling air passing over said condenser out of con-tact with said compressor.

4. In a household refrigerator having a food storage compartment and an apparatus compartment therebeneath having an air inlet at the bottom and a vent adjacent the top thereof, ,refrigerating apparatus in said apparatus compartment comprising a compressor adjacent'the bottom of the compartment, a condenser having a part extending horizontally beneath said compressor and an angularly disposed part, and means preventing heat exchange between said compressor and said angular part of said condenser.

5. In a household refrigerator having a food storage compartment and an apparatus compartment therebeneath having an air inlet at the bottom and a vent adjacent the top thereof, refrigerating apparatus in said apparatus compartment comprising a compressor adjacent the bottom of the compartment, a horizontally extending condenser between said compressor and a floor supthe compartment, a horizontally extending con;

denser between said compressor and a floor sup porting the refrigerator, and an apertured reflector interposed between said compressor and said condenser to partially prevent radiant heat from the former from reaching the latter.

7. In a household refrigerator having a food storage compartment and an apparatus compartment therebeneath having an air inlet at the bottom and a vent adjacent the top thereof, refrigerating apparatus in said apparatus compartment comprising a compressor adjacent the bottom of the compartment, a horizontally extending condenser between said compressor and a floor supporting the refrigerator, a reflector member interposed between said compressor and said condenser and providing for passage of convective currents of air from the latter to the former, and. means maintaining a part of the cooling air passing over said condenser out of contact with said compressor.

8. In a household refrigerator having a food storage compartment and an apparatus compartment therebeneath having an air inlet at the bottom and a vent adjacent the top thereof, refrigerating apparatus in said apparatus compartment comprising a compressor adjacent the bottom of the compartment, a horizontally extending condenser between said compressor and a floor supporting the refrigerator, an apertured reflector interposed between said compressor and said condenser to partially prevent radiant heat from the former from reaching the latter, and means maintaining a part of the cooling air passing over said condenser out of contact with said compressor.

9. In a household refrigerator having a food storage compartment and an apparatus compartment therebeneath having an air inlet at the bottom and a vent adjacent the top thereof, refrigerating apparatus in said apparatus compartment comprising a compressor adjacent the bottom of the compartment, a horizontally extending condenser between said compressor and a floor supporting the refrigerator, an apertured reflector interposed between said compressor and said condenser to partially prevent radiant heat from the former from reaching the latter, and a downward- 1y extending baflle for maintaining a part of the cooling air passing over said condenser out of contact with said compressor.

10. In a'household refrigerator having a food storage compartment and an apparatus compartment therebeneath having an air inlet at the bottom and a vent adjacent the top thereof, refrigerating apparatus in said apparatus compartment comprising a compressor adjacent the bottom of the compartment, a condenser having a part extending horizontally beneath said compressor and an angularly disposed part, means interposed between said compressor and the horizontal part of said condenser restricting the passage of radiant heat but permitting the passage of convective heat, and means preventing all heat exchange between said compressor and said angular part of said condenser.

11. In a household refrigerator having a food storage compartment and an apparatus compart: merit therebeneath having an air inlet at the bottom and a vent adjacent the top thereof, refrigerating apparatus in said apparatus compartment comprising a compressor adjacent the bottom of the compartment, a condenser having a part extending horizontally beneath said compressor and an angularly disposed part, an apertured reflector interposed between said compressor and the horizontal part of said condenser to partially prevent the passage of radiant heat but. to permit the passage of convective heat, and a downwardly extending baffle interposed between said compressor and the angular part of said condenser.

12. An apparatus unit for refrigerating systems comprising a compressor and a horizontally extending condenser secured beneath said compressor and in spaced relation thereto, and means interposed between said compressor and said condenser permitting the passage of convective heat but resisting passage of radiant heat.

13. An apparatus unit for refrigerating. systems comprising a compressor, a horizontally extending condenser secured beneath said compressor and in spaced relation thereto, and a deflector having upwardly struck portions interposed between said compressor and said condenser for partially preventing radiant heat from said condenser from reaching said compressor but permitting convective heat from the former to pass to the latter.

14. An apparatus unit for refrigerating systems comprising a compressor, a horizontally extending condenser secured beneath said compressor and. in spaced relation thereto, and baifle means for keeping a part of the cooling air passing over said condenser out of contact with said compressor. I

15. Apparatus for refrigerating systems comprising a motor pump unit, a condenser having a part extending horizontally beneath said motor-pump unit and in spaced relation thereto and an angular part remote from said motorpump unit, and means protecting said condenser parts from the radiant heat of said motor-pump unit.

16. Apparatus for refrigerating systems comprising a motor pump unit, a condenser having a part extendinghorizontally beneath said motorpump unit and inspaced relation thereto and an angular'part remote from said motor-pump unit, and means protecting said condenser parts from the radiant heat of .said motor-pump unit, said means permitting the passage of convective heat from'the horizontal part of said condenser to said motor-pump unit.

17. Apparatus for refrigerating'systems comprising a motor pump unit, a condenser having a part extending horizontally beneath said motorpump unit and in spaced relation thereto and an angular part remote from said motor-pump unit, a perforated reflector plate between said motorpump unit and the horizontal portion of said condenser, and 'a downwardly extending baflie between said motor-pump unit and the angular portion of said condenser.

. HARRY s. ES'ILER. 

